package eclipse1;

public class Test5 {
    public static void main(String[] args) {
        Student s1 = new Student();
        Student s2 = new Student(5,"张三");
        Student s3 = new Student(6,"李四","男");
        Student s4 = new Student(7,"王五","女",21);

        System.out.println(s1.toString());
        System.out.println(s2.toString());
        System.out.println(s3.toString());
        System.out.println(s4.toString());


    }
}
